If the thumb connection is not good, the functionality of the thumb will lose a lot in the future, which will affect. It's very big, and your thumb is too functional.

After the muscle tendon is connected, it can reach 70% of the original value if it is recovered in the future, and it can be recovered slowly through exercise in the later stage.

If the recovery is not good, the function of fingers and the whole arm will be poor, dear, don't exercise with your left hand in the future!